Home > Invertebrates > Sea Urchins > Astropyga radiata

Updated 10/5/2021

Family Diadematidae

INDO-WEST PACIFIC/ HAWAII

Astropyga radiata

Blue-spotted Urchin, Maui, 20 feet, Photo by Kerry

Kihei, Maui

 

 Blue-spotted Urchin, Maui, 20 feet, Photo by Kerry

Juvenile, Auau Crater, Hawaii, 180 feet

Keauhou, Hawaii

BLUE-SPOTTED URCHIN

Rare on sand or rubble away from reefs, typically deeper than 60 feet.  Flexible test with neon blue dots and venomous spines.  Attains overall diameter of 8 inches.  East Africa to Hawaii.